Apparatus for making coils.



R. VARLEY. APPARATUS FOR MAKING GOILS.

APPLIOATIOH FILED OCT. 14, 1911.

1,047,720. Patented Dec. 17,- 1912.

3 SHEETS-SHEET 1.

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lw-l ia' v R. VARLBY. APPARATUS FOR MAKING GOILS. APPLICATION FILED OCT. 14, 1911.

' 1,047,720. Patented De0.17, l912.

3 SHEETS-SHEET 2.

.WITNESSES. 4 1NVENTOR.

R. VARLEY.

APPARATUS FOR MAKING SOILS.

nrmornon nun new. 14, 1911.

1,047,720,. Patented Dec. 17, 1912.

3 SHEETSSHEBT 3.

wrrusssz'; INVENTOR.

1 UNITED STATES Parana ornion.

VABL EY, OI" ENGLEWOOD, NEW JERSEY,

ASSIGNOB. 'ro vAnLEv DUPLEX MAGNET COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF- NEW JERSEY.

APPARATUS FOR MAKING COILS.

Patented Dec. 1?, 1912.

Application filed October 14, 1911 Serial No. 854,755.

'To all whom it may concern:

Be it known that I, RICHARD VARLEY, a citizen of the United States of America, and residing at Englewood, in, the county of Bergen and State of New Jersey, have invented new "and useful Apparatus for Making Coils, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form part of this specification.

The object of m invention is to provlde new, simple and e icient apparatus for making electric coils. f

In" such an apparatus I aim to provide means whereby a coil may be quickly and accurately wound.

I also aim to provide means-whereby a plurality of coils may be contemporaneously formed.

In making the coil provision is made for the presentation to and-incorporation in the coil, of strips of binding element in such manner as to firmly tie or bind against displacement the turns of the winding.

I will now describe my invention so that others skilled in the art to which .it apperunderstand and construct the tains -ma same. While reference is had, in such description, to the attached drawing, I do not desire to limit myself to such apparatus as it will be premised many changes may be .made therein without departing from the spirit thereof. For instance, the coil formers of such apparatus may be sha' ed for the production of circular or other s aped coils other than the angular shape shown.

Figure 1' is a s1de elevation of apparatus illustrating my invention and showing provision for the making of a plurallty of coils, preferably in contemporaneous manner; 2 is a top plan view of the same;

Fig. 3 is an end view of one of the coil mandrels or formers and showing coil winding thereon; Fig. 4 is a perspective view of a coil former, showing a coil thereon and having, partly in full lines and partly in dotted lines, indicated strips of binding element incorporated in the coil; Fig. 5 is a similar view showing a modified construction of coil former for adaptation thereof to recepy tion of narrow binding elements, such as strands of wire; Fig. 6 is an end view of a coil former, and indicating, largely in diagram, severin of connecting strips of binding element ying intermediate adjoining coil formers; Fig. 7 isa fragmentary perspectlve view of a corner portion-of the coil former and showing means for terminally clamping strips of binding tape against displacement; Fig. 8 is a perspective-view of. a coil made by my'improved a paratus and showing the condition thereof preparatory to its removal from a coil former; Fig. 9 is a diagrammatic View showin manner of supplying a plurality of coil ormers, with binding tape, and preferably from a common source of supply; Fig. 10 is a similar view showing manner of presenting binding tape to the coils in the progress of making, this view illustrating, primarily, the feeding of tape adapted to, form binding element lying within the very body of the coil as will be hereinafter more fully described; Fig. 11 is a similar fragmentary view showing means for corrugati'ng the tape prior to its application to the coil; Fig. 12 is an en larged sectional view through a plurality of coil formers, and showing modified form of means for corrugating the tape; Fig. 13 is a cross-sectional view of a portion of a coil former and indicating, partly in diagram, manner of anchoring portions of binding tape, within the coil; Fig. 14 is a similar View showin manner of binding different portions .of t e coil with separate strips of binding element, and as applied to binding of the corners of angular coils, the coil former showing construction adaptable for such purpose; Figs. 15 and 16 are perspective views of modlfied forms of binding tape used in connection with -my apparatus-and Fig. 17 is a plan view of an angular coil made by my apparatus.

In carrying out my invention I preferably provide for the contemporaneous formation.

of a plurality of coils, and in describing the mechanism so provided and shown in the accompanying drawings, I illustrate in connection therewith a method of making coils described in my co-pending application Serial No. 654,752. I do not, however, desire to limit my apparatus to the carrying out of any particular method. The method 1 herein disclosed shows the feeding of binding tape or strip to coil mandrels -and coils either preparatory to Winding or during the winding or both, which binding element is incorporated in and becomes part of the coil. However, certaln portions of a strip may be used as a temporary or provlsional binder, suchas a strip superficially wrapped about the coil to enable it .to keep its shape in certain respects and to assist portions of other tape carried by the coil, as will ap- 5 pear hereinafterf The application of the tape, if to be a superficial binder, may first be to the mandrels or formers after which the winding of the coil may proceed, and during the winding'portio-ns of binding strip are supplied to the coil at intervals in the development of such winding. The binding tape may comprise strips of paper, cambI'lC, or very thin fiber-board, and is preferably so incorporated as to allow of end or terminal extension beyond'the body of the coil, which extension may be incorporated in layers of the winding or may be bound to superficial turns of the coil at the ends thereof so as to reinforce such turns and the layers as -a whole against displacement. Bindin of the ends of the tapeagainst the 1 ends 0 the coil; may be effectedby wrapping the coil about in the plane of the extension by certain portionsof the same tape or 2 5 by the employment of a superficial tape such as that first presented to the coiling mandrel. Or, in lieu of the tape applied to the outer facesof the coil, I may use a metallic binder such as strands of small gage wire.

The numeral 2 represents a rotatory shaft orspindle which may form the main operative element of a coil machine. I do not disclose in the drawings 'the frame-work or housing or like constructionffor the reason 5 that these mniy be supplied by the mechanic and may co prise the suitable mountings of coiling machines such-as the Varley coil machines. However, I indicate by the numeral 2 bearings in which the spindle '2 may 1 40 be journaled. Carried by the spindle 2 are coil formers or mandrels 3, which may be of the usual construction in so far as con cerns their separability for theremoval of completed coils. These formers are provided with end disks or members 4, the spac ing of which from one another determines the length of the coil to be wound upon the former. In the disks 1 I form recesses 5 which preferably extend from the periphery of the disk in each case to the body of the former, or substantially to the body, as shown in Figs. 12, 13 and 14.

With a plurality of coil formers mounted in-a common manner on the spindle 2 the recesses 5 of the dilferent formers may lie in alinement or in register with one another asshown in Figs. 1 and 2, so that tape may be fed from a. common source of supply 6 in its presentation to the pluralityof coils or mandrels for the reason that the said recesses 5 enable binding. tapes a to be so presented and applied to the coil as to act as guides thereof and thereby bring about desirable superpositioning of the tapes when 66 a plurality are employed at the same points v my invention is in the development of the coil and. also proper disposition of tapes at intervals along the winding or body of the coil. But a further purpose and important feature of that it enables-the application of tapes to the mandrels or coils in such manneras to allow of extensions of tape from the ends of the coils so as to overcome abortive binding action due to the drawing in of the terminal portions of b1nding tape, arising from the corrugating action set up by the application of. the turns of wire upon the tapes as such turns go into position in alternate or staggered manner with respect to the underlying turns.

The source of; supply 6 of binding tape may be in the form of suitable rolls 7 which I may be carried by suit-able shafts or journals 1 8. In Figs. 1 and 2 I show these'rolls 7 as being mounted in a suitable support-.9, carried so as to rotate with the mandrels 3. This insures proper positioning of the several rolls with respect to the alining recesses 5 of the formers or mandrels. If the source of supply 6 of tape is not so associated with the coil formers 3 as to rotate in unison therewith, that is, if the source of supply is stationed at a fixed or practically fixed point from the rotatory mandrels, it

would be'necessary, of course, to sever the supply of'tape requisite, to the binding contemplated. If the supply is made to rotate with the coil formers or mandrels, as indicated in Figs. 1 and 2, the necessity of severing the tape does not arise until further application thereof to other portions of the winding. By mounting the support 9 close to .its respective former 3 such intimate association serves to prevent displacement of 7 the tape from the recesses 5 at that end of the spindle 2. The opposite end of the tape is held by clamping means 10 which may comprise a suitable spring clip under which the paper is inserted as itis supplied to the mandrel. This clip is shown in a very clear manner in Fig. 7 and as comprising the resilient leaf 11 which coacts with a face 12 of the former 3 to clamp the tape.

In Fig. 10 I show corrugating elements 13 between which the tape a may be passed in its travel from the source of supply 6 to the ent formers 3 upon -proper adjustment ofcoil formers 3. This corrugating means 13 i such tape. These corrugations are indicated 5 at b, and theobject thereof is to provide for such' presentation of tape-to coils in which the gage of winding is of large size as to set up corrugating action on the tape, with resultant placing of in'urious strains on such tape, as'the turns 0 wire assume staggered relationship with the difl'erent layers.

.By providing the corrugations b the tape is without straining thereof. This is an important featureof my apparatus for, unless provision is made to allow of this corrugating action by the wire to take place without injurious strains on the tape, fracture of the tape might occur at points within the coil and thereby depreciably affect the binding action of such tapes. As clearly'shown in Fig. 12 the tape may freely move by reason of the corrugation b which constitutes a reservation intermediate the coils.

In Fig. 11 I show the corrugating means 13 as adapted for continuous corrugation of the tape as it passes from the source of supply 6, By continuously corrugatin the tape strains are obviated by reason the fact that the corrugations adjust themselves to the contour of the wire as it is applied.

However, in lieu of. corrugating the tapeI dr may employ tape capable of separating very readily at points intermediate the coils. Such a tape a is shown in Figs. and '16 and as having corrugations d or slots 6 respectively so spaced along the tape as to becapable of assuming positions between the coils; the application of the winding and resultant take-up of the tape causes separation at the points of perforation or other incisions.

In Figs. 1 and 6 the numeral 14 indicates severing apparatus which may be presented to the mandrels for the purpose of cutting the tapes between the several mandrels.

This apparatus is employed in cases where the tape is not severed under the corrugating action of the winding. As shown in Fig. 6, it may comprise a suitable knife 15 mounted as bymeans of a pivot 16 so as to be capable of ready presentation and retraction from the tapes. 6. as the coiling mandrels are rotated.' The mandrels 3*may each be provided with clamping means 10 disposed at each side thereof to permit of individual holding of tape in its application to' the coil.

As shown. in Fig. 13, the tape may be passed back and forth in such a manner as to be terminally held by the clamps while layers or turns of wire are applied to anchorthe same within the coil. However, the clamping means is not limited to such manipulation of the tape but may be'used in any desirable manner.

In Fig. 14 I show in cross section the corner of the coil-former on a line passing through corner recesses 5 which may re ceive winding tape f for the binding of the corners of the angular coil. These recesses are shown ascommunicating with the winding zone of the former on an angle through the disk 4 for the purpose of providing a thickness of metal as at h at the corner of the mandrel which is weakened by the close positions of the recesses -5 in the particular mandrels shown. The object in providing for the binding of the corner of the coil is,

to :take care of the tendency of the corner to spread or fan (tut upon itsromoval from between the disk 4 of the mandrel. The manner of applying. the binding element 1 may. .be varied as desired as this method does not form part of the present invention.

Where binding tape is first fed to the mandrels and so 'as to lie in recesses 5 or 5 and the winding of the coil proceeded with after which the coil may be bound with such bind ng tape, I preferably so space the mandrels as to conserve space and so apply the tape as to provide for a gathering or accumulation thereof at points 12, or points intermediate the mandrels, as shown in Fig. 9," so that suflicient length of tape is provided forlthe wrapping of the coil of each mane In. Fig. 17. -I show the coil 17 as being superficially wrapped by means of binding tape, as indicated at 18. However, instead of wrapping the coil with tape, the mandrel 3 may be provided with suitable recesses 19 forthe accommodation of strands of small gage wire which may be employed in lieu of the outer tape. This construction is shown in Fig. 5 wherein the strands of wire are indicated by the numeral 20.

The particular coil former disclosed hereinforms subject matter of my. co-pending application Serial No. 654,753, and I do not, therefore, claim the same in this application.

It will be apparent that many changes may be made in my apparatus as above descr1bed,'which would not be departures from my invention. While I have spoken of the apparatus as adaptedfto the formation of a plurality of coils contemporaneously, I I

may wind the coils in a single manner, for, What I claim and desire to secure by Letters Patent isf 1. In apparatus for making coils, a shaft,

a coil former mounted thereon, 'a source of supply of binding tape, and means for guiding the tape in presentation thereof to the former on a line parallel with the axis of the shaft. a

2. In apparatus for making coils, a shaft, a coil former mounted on the shaft, a source of supply of binding tape, means for guiding binding tape in its presentation in the making of the coil, and means for holding the ends of the tape against displacement.

3. In apparatus for making coils, a shaft, a coil former carried thereby, a source of supply of binding tape, means whereby presentation .of binding tape to the coil may be effected in a. plane substantially parallel with the winding face of the former, and means for holding the tape against displacement. u v

4. In apparatus for making coils, a shaft,

. supply of binding tape, and means enabling a coil former mounted thereon, a source of the presentation of strips of binding element to the coil, at a plurality of points and in a plane substantially parallel with the axis of the shaft.

5. In apparatus for making coils, a shaft, a coil former mounted thereon, and means for enabling presentation of a plurality of strips of binding element to the coil, 1n a common plane substantially coincident with f layers ofwindingapd in a line parallel with a t. I

the axis of the s 6. In. apparatus for making coils, a shaft,

'a coil former thereon, a source of bindingt-ape, and means for guiding the tape in presentation thereof at a plurality of points in a common plane to the coils andin a line parallel with the axis of the shaft, and

.means for holding the tape against displacement.

7. In apparatus for making coils, a coil former mounted u n a rotatory shaft, a source of supply of inding tape for feeding to the formers and capable of rotatory travel with the shaft, and means for guiding the tape 1n presentation thereof to the former,

on a line parallel with the axis of the shaft.

In testlmony whereof, I have hereunto 

